MrPulldown
Well-Known Member
- Joined
- March 1, 2017
- Messages
- 211
- Reaction score
- 25
- City, State
- Truckeee
- Year, Model & Trim Level
- 2004, 4wd, 4.6l
The last time I changed the fluid in my t-case I used a dex/merc III ATF. As instructed in my owners manual. Someone piped up and said that I should really be using Ford Mastercraft XL-12 T-case fluid.
I am going back in there and changing out a bunch of fluids before the winter and figure I should maybe change out the t-case again. Is xl-12 the best thing to us. It is said that xl-12 has friction modifiers to help engagement. However it is my understanding that the T-case uses a mechanical ball and ramp type engagement and not a tradition friction clutch plate.
If using a special t-case fluid why not a fully syn fluid like the valvoline T-case fluid which says it is suitable for xl-12.
https://www.grainger.com/product/46...ice^c-plaid^66418499719-sku^46KK34-adType^PLA
I am going back in there and changing out a bunch of fluids before the winter and figure I should maybe change out the t-case again. Is xl-12 the best thing to us. It is said that xl-12 has friction modifiers to help engagement. However it is my understanding that the T-case uses a mechanical ball and ramp type engagement and not a tradition friction clutch plate.
If using a special t-case fluid why not a fully syn fluid like the valvoline T-case fluid which says it is suitable for xl-12.
https://www.grainger.com/product/46...ice^c-plaid^66418499719-sku^46KK34-adType^PLA